I desperately need help... !
/// MY EXPECTATIONS ///
I wish I may use a relay mail server (Mailgun) for :
E-mai domain, e.g....
Long time since dist-upgrade so scratched Jessie and did a clean install to Buster. So far so good, except I can't get f2b mails to work....
Ok, i've secured my server with Lets Encrypt SSL
I have copied that SSL cert for Postfix and other services....
Separate names with a comma.